Phenylbutazone or Bute, a pyrazolone derivative is a veterinary medication that helps in alleviating inflammatory conditions relating to or involving the muscles and the skeleton, especially those affecting joints and limbs. Belonging to the anti-inflammatory category, the drug is also effective in dealing with pain and inflammation caused due to arthritis, fractures and injury-inflicted pain in dogs. Phenylbutazone, which is the main component contained in the drug, reduces the formation of prostaglandis and thromboxane. When administered, the medication temporarily holds back the aggregation of platelets. Moreover, this ingredient possesses uricosuric function. The medication is a prescription drug and comes in 100mg tablets.